* {
    box-sizing: border-box;
}

:root {
    --bg: #f2f6f9;
    --panel: #ffffff;
    --text: #1f2933;
    --muted: #5b6b7a;
    --line: #d8e0e8;
    --brand: #2667ff;
    --brand-strong: #1749bf;
    --ok: #1f9d55;
    --error: #c53030;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background: linear-gradient(165deg, #eef4fb 0%, #f7fafc 45%, #e9f1f7 100%);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: #12314f;
    color: #ffffff;
    padding: 0.8rem 1rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
}

.site-header h1 {
    margin: 0;
    font-size: 1.2rem;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.14);
}

.container {
    max-width: 1200px;
    margin: 1rem auto;
    padding: 0 0.8rem 2rem;
    display: grid;
    gap: 1rem;
}

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 0.9rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.card h2 {
    margin-top: 0;
    font-size: 1.05rem;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.8rem;
}

.metric-label {
    margin: 0;
    color: var(--muted);
    font-size: 0.85rem;
}

.metric-value {
    margin: 0.2rem 0 0;
    font-size: 1.3rem;
    font-weight: 700;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 0.7rem;
    align-items: end;
}

label {
    display: grid;
    gap: 0.25rem;
    font-size: 0.9rem;
    color: var(--muted);
}

input,
select,
button {
    font: inherit;
}

input,
select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0.45rem 0.55rem;
    background: #ffffff;
}

.inline-form {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 0.6rem;
}

.btn {
    border: none;
    background: var(--brand);
    color: #ffffff;
    padding: 0.5rem 0.9rem;
    border-radius: 8px;
    text-decoration: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--brand-strong);
}

.btn-secondary {
    background: #6b7c8e;
}

.btn-secondary:hover {
    background: #556474;
}

.btn-danger {
    background: #c53030;
}

.btn-danger:hover {
    background: #9f2525;
}

.row-actions {
    display: flex;
    gap: 0.4rem;
    align-items: center;
}

.row-actions form {
    margin: 0;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

th,
td {
    border: 1px solid var(--line);
    padding: 0.4rem 0.45rem;
    text-align: left;
    font-size: 0.86rem;
    white-space: nowrap;
}

th {
    background: #edf3f8;
}

.totals-row {
    font-weight: 700;
    background: #f1f8ff;
}

.message {
    margin: 0 0 0.8rem;
    padding: 0.55rem 0.7rem;
    border-radius: 8px;
}

.message.ok {
    color: var(--ok);
    background: #e7f8ee;
}

.message.error {
    color: var(--error);
    background: #fdeaea;
}

.chart-wrap {
    max-width: 500px;
    margin: 0 auto;
}

@media (max-width: 640px) {
    .site-header {
        padding: 0.75rem;
    }

    .site-header h1 {
        font-size: 1rem;
    }

    nav a {
        font-size: 0.83rem;
    }

    .container {
        margin-top: 0.7rem;
        padding: 0 0.45rem 1rem;
    }

    .card {
        padding: 0.7rem;
    }

    .entry-form {
        grid-template-columns: 1fr;
    }

    table {
        min-width: 620px;
    }
}